close up of head from Cromodoris Nudibranch

ardeadoris egretta chromodorididae doridoidea gastropoda nudibanch dorid nudibranch sea slug invertebrate mollusc marine gastropod marine animal aqua aquatic water saltwater saltwater species underwater undersea sea sealife ocean ocean habitat coral corals coral reef close up macro critters critter diving scuba scuba diving asia indopacific philippines wild wildlife temperate tropical exotic beautiful white yellow colorful